Cultivator



J. ROLL! Nov. 6 1923.

CULTIVATOR.

1919 2 Sheets-Sheet 1 Filed March 24,

WITNESS. m J

A TTORNEYv Nov. 6, 1923'. 1,473,519

I J. ROLLI CULTI'VATOR Filedma'rch 24, 1919I @sheets-sheet z Il l||| WITNESS:

INVEN TOR.

A TTORNEY:

@YM/MM Patented Nov. 6, i923.

JOHN ROLLI, OF wEsr'ALLIs, WISCONSIN.

CULTIVATOR.

Application leri March 24, 1919. SeralxNio. 284,532. l

To all 7071.012@ t may concerne.'

Be it known that l, JOHN ROLLI, a citizen of the United States, residing at lVest Allis,

The obj ect of my invention is to provide aA machine having va series of sets of cooperatingcutters and harrowing devices, of differing character, wherebyY the same machine may be` adapted to the requirements of soils of varying character. Y

ln the drawings,-

Figure l isa side elevation of a machine embodying my invention. n

Figure 2.is a detail side view of one of the castor disks andl associated means for raising and lowering` the same. *n

Figure 3 is a detail view of one of the final harrowing disks and its associated leveling blade.

Figure 4V is a detail view of a fragment of the main operating handle, and controlling latch, showing the. latchretracting device.

Figure 5 is a detail view of a fragment of one of the cutter blades of the drum.

Figure 6 is a plan view of the machine with'one side broken away.

Figure 7 is a detail side view. showing the controlling bar in tilted position, with the main operating handle raised.

Figure 8 is detail view of the rack and pinion mechanism for Yraising and lowering the castor disks, and the means for locking the disk shanks rorrack bars in proper position. .y y l p Like parts are identifiedby the same ref efr-once characters throughout the several views. l

The mainframe l may be propelled in any ordinary manner and may be supported in parl by a front wheel 2 and in part by wheels 3, over which themachine may be substantially balanced. when the harrows are raised.

Near the forward end of the frame, a tiltp ing head plate 4 is secured to the side bars of the frame by a cross shaft 5, to which the front margin or marginal portion of the plate is rigidly secured. Rotatable cross shafts 8, journaled to the upper side of this plate, are provided with pinions 9 in mesh with rack bars l0, the latter being adapted to slide verticfallythru apertures 11 in thel plate,.the walls of'these apertures servingas guide. bearings to hold the rack bars in mesh with the pinions, and Iina substantially ver tical position. Y

At the lower. ends of the rack bars they are provided with .swivel heads'l., upon Q which swinging .arms 16v are journaled, each armzcarrying a stud shaft 17, supporting a cutter disk 1,8, which is` preferably slightly dished, as shown. The castor disks are supported in sets of parallel disks, with others operating in the rear and laterally offset from those in front, but each disk is free to swing about the axis of the swivel head'l to which it is connected. Therefore, the disks may run around stones andother hard obstructions. Y

In the rear of theodisks 18, I preferably provide a set of cultivator .teeth 20, supported by bars 2l and levers 22 from the rear marginal portion ofthe head plate 4. Braces or links support the bars 2l from the-.levers 22 to prevent the bars 21 from swinging upon -Ktheir connections at 25. These levers 22 will Abe lifted when the head plate is tilted to the position in which it is shown in Figure 7. Y

The main lever or handle lis employed to tilt the head plate. It has a latch 8l oooperating with a toothed segment 32, to lock the lever in various positions of adjustment, Y j

thus regulating'the depthY ofthe cutting and harrowing` operations. A sliding ring 34 mayV hold the latch in Y retracted position, thus allowing the head plate 'to swing free.

The pinions 9 have their shafts squared at the ends, as shown at 33. These shafts may -be separately actuated by a crank 35. They are locked by a lever 36, which, when in" locking position, receives the squared ends Y of the shafts innotches 37.

f A lever 40, pivoted to the frame at 41, i

Vmay be used to manually rcontrol the Ahead plate 4 when kthe main lever 30 is unlatched. rThis lever 40 is connected tothe head plate by a link 42. The front wheel is preferably connected with the front end of the main frame by a steering post 43.v i

In the rear of the wheels 3, I provide a drum 45, having central and end arms 46 projecting radially and forked at their outer ends to receive blades 48, the margins of which follow substantially a helical line, curvingk about the drum from the respective ends toward the center'l The outer and inner margins of these blades have cutting edges, and they may be reversed when one edge becomes dull, being detachably bolted to the arms 46.

The drum il5 has its supporting shaft50 ordinarytype, but a set of scraper blades 61v are preferably hung upon the shaft and provided with elbowed portions 62 trailing in the rear of the disks and adapted to push the soil inthe opposite direction from that in which it is plowed by the disks, thereby levelling the surface.

It will be understood that in my improved machine the soil isl first cutv by the disks 18, along lines' generally parallel to the direction: of vehicle travel, but curving laterally to some extent to avoid unyielding obstructions. The cultivator teeth' 20, when in use, enter the grooves made by these disks and further harrow up the soil. v The drum blades cross cut the soil and reduce it to a condition where complete pulver-iza-v tion is possible by means of the disk harrow at the rear. Ordinarily the main .lever may be lockedA in the desiredv position to lcontrol; the penetration of the teethl 20, but under some conditions lever 40,may bel manually manipulated to raise and lower these cultivators to `suit varying conditions.

lt Ywill'be observed that each ofithe soil cultivating elements above described constitutes a" plow, but the successive sets of plows differ in character .and therefore act differently upon the same portion of the soil, whereas in the ordinary cultivators or plows as heretofore constructed each portion lof the soil is sub` jected to the action of a single plow, and where plows are used in gangs they are employed to cut parallel furrows, andthere` fore simply form a set of furrows instead of one. A

am aware that colters have been used inA advance of a plow to cut a slit in the soil to facilitate guiding lthe plow along a straight line, and to cut grass roots to'llerssenl resistance and facilitate turningV a furrow of uniform. width, and properly turning the sod to completely bury the growing vegetation. Such colters are simple disks and are not plows in any sense, for they do not turn over any portion lof the soil. Therefore they are not equivalents for my plowing disks 18 which are concave on one side and convex on the other, and are therefore not colters, but pl'ows per se. v

I claim z Y Y 1. In a cultivating machine, a tilting supi port, a set of posts adjustable perpen'dic'- ularly to t'lie support, rack andvpginionr connections for adjusting the posts,4 armsl in swiveled and laterally swinging connection with the lower end of" the posts,- and rcutting disk journaled on said arms. 2i ln a cultivating machine, a? tiltin support, a set of posts adjustable perpenf dicularly to the support,rack and lpinion connections for adjusting the posts, Aarms in swiveled and' laterally swinging connec-V Y tion with the lower ends of the posts,vv and cutting disks jlournaledjin said` arms,,the pinions haring shafts provided with squared portions, and the frame having a notched lever adapted to simultaneously engage saidV squared shaft portions to; simultaneously lock all the pinionsy against rotation 3Q In a cultivating machine, the combinaf tion with a main frame provided with front and rear supporting wheels, of a cross shaft segment for maintaining the head platein any one of a plurality of tilted positions;

In" testimony whereof I aiiiX my signatureV in the presence of two witnesses. JOHN ROLTJ.

lVitne'sses':

Lnvnnn'r'r C. VVHEELER,- O. C. WEBER. 

